The disclosure includes a wallet comprising an open-sided shell, a flexible member coupled to the open-sided shell, and an elastic band coupled to the flexible member. The flexible member may comprise an internal surface and an external surface located opposite the internal surface. In some embodiments, the open-sided shell is coupled to the internal surface. The wallet may be configured to move between open, closed, and clamshell positions. In the clamshell position, the elastic band may be configured to wrap around an external surface of the flexible member, thereby holding the wallet shut.